CN108822665A - A kind of bactericidal inner wall coating and its construction method - Google Patents
A kind of bactericidal inner wall coating and its construction method Download PDFInfo
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- CN108822665A CN108822665A CN201810576164.7A CN201810576164A CN108822665A CN 108822665 A CN108822665 A CN 108822665A CN 201810576164 A CN201810576164 A CN 201810576164A CN 108822665 A CN108822665 A CN 108822665A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0806—Silver
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Plant Pathology (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
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Abstract
The invention discloses a kind of bactericidal inner wall coating, are made of the component of following parts by weight：25~30 parts of acrylic emulsions, 0.1~0.3 part of OP-10 emulsifier, 0.1~0.3 part of tributyl phosphate, 10~15 parts of hydroxyethyl celluloses, 0.3~0.5 part of sodium polycarboxylate, 0.3~0.5 part of calgon, 1~3 part of propylene glycol, 3~5 parts of diatomite, 1~3 part of sepiolite powder, 10~15 parts of silver-carrying nano zeolite powders, 30~35 parts of deionized waters.Bactericidal inner wall coating of the invention passes through the rational proportion of base-material, filler and various auxiliary agents, and production cost is low, non-toxic and tasteless, safety and environmental protection, wash-resistant property is good, permanent to sterilize, it can be widely used for the interior walls coating such as room, office, classroom, hospital, reduce the harm of all kinds of bacteriums and exhaust gas.The invention also discloses a kind of bactericidal inner wall coating application methods, and processing step is simple, easily implement, strong operability, are suitble to promote and apply.
Description
Technical field
The present invention relates to a kind of function interior wall coatings, more particularly, to a kind of bactericidal inner wall coating and its construction method.
Background technique
With country's publication《Indoor decorating and refurnishing materials limits of harmful substances》Standard is formally implemented, and people apply wall
The quality of material proposes requirements at the higher level, and consumer will be become with functional environmentally protective coating for internal and external wall by integrating decorative
It is preferred.Contain various germs in some special occasions, such as hospital, classroom, office, air, these bacteriums are
The source of cross-infection is caused, a kind of coating with special sterilizing function is thus needed to play sterilization, effect of keeping a public place clean.
Fungicidal paint common at present mostly uses greatly the method that organic bactericide is added in coating, and general fungicide is toxic
Property, dangerous, easy dissolution, durability it is poor, in addition cannot bear thousands of time to scrub and sterilize repeatedly, it is difficult to reach wanting for application
It asks.
Summary of the invention
The present invention be in order to solve the fungicidal paint of the prior art use in coating add organic bactericide method with
Reach sterilization purpose, there is a problem of dangerous, easy dissolution, durability difference, provide it is a kind of formula is scientific and reasonable, production cost
Low, non-toxic and tasteless, safety and environmental protection, wash-resistant property is good, the bactericidal inner wall coating sterilized for a long time.
The invention also discloses a kind of bactericidal inner wall coating application methods, and processing step is simple, easily implement, operability
By force, it is suitble to promote and apply.
To achieve the goals above, the present invention uses following technical scheme：
A kind of bactericidal inner wall coating of the invention, is made of the component of following parts by weight：25~30 parts of acrylic emulsions,
0.1~0.3 part of OP-10 emulsifier, 0.1~0.3 part of tributyl phosphate, 10~15 parts of hydroxyethyl celluloses, 0.3~0.5 part poly-
Carboxylic acid sodium, 0.3~0.5 part of calgon, 1~3 part of propylene glycol, 3~5 parts of diatomite, 1~3 part of sepiolite powder, 10~15 parts
Silver-carrying nano zeolite powder, 30~35 parts of deionized waters.The present invention improves and optimizates the formula of bactericidal inner wall coating, film forming
The adaptability of substance directly affects application property, alkali resistance, the temperature-change resistance of coating, directly affects the service life of film, is based on
Cost and performance comprehensively considers, and is defoaming with tributyl phosphate using acrylic emulsion as base-material (film forming matter) in the present invention
Agent, using sodium polycarboxylate as dispersing agent, is levelling agent (between reduction particle using calgon using hydroxyethyl cellulose as thickener
Interaction, hence it is evident that reduce viscosity, improve its mobility), using propylene glycol as antifreezing agent, with diatomite, sepiolite powder, carry silver
Nano zeolite powder is filler, and wherein diatomite has unique orderly microcellular structure and duct is interconnected, and has stronger hole
Appearance and inner ratio surface area, extremely strong absorption property and reactivity are that coating made of filler has insulation, absorption using it
The performances such as toxic gas, anti-condensation and noise reduction, and wash-resistant property is good；Sepiolite internal porous and hole communicates, in coating
Suitable sepiolite is added, the absorb-discharge humid of coating can be improved, while can also effectively improve the suspension of coating, thixotropy, storage
Stability is deposited, while the needle-shaped and surface groove structure of sepiolite powder is conducive to its incorgruous distribution, crosslinking in the coating, to improve
The physical property of coating；Silver-carrying nano zeolite powder is both filler and sterilization material, and zeolite powder has unique adsorptivity, resistance to
The characteristics such as acid-base property, thermal stability and mithridatism, while alternative common paint filler titanium dioxide, talcum powder, kaolin etc., have
Conducive to cost is reduced, silver has bactericidal effect, and silver-carrying nano zeolite powder is with silver ion for main antimicrobial component, with nano zeolite
Powder is carrier, and silver ion uniformly, is steadily embedded in the micropore on nano zeolite powder surface, makes its slow release to reach long
Long bactericidal effect；The present invention passes through the rational proportion of base-material, filler and various auxiliary agents, and production cost is low, non-toxic and tasteless, safety collar
It protects, wash-resistant property is good, and it is permanent to sterilize, it can be widely used for the interior walls coating such as room, office, classroom, hospital, reduce all kinds of thin
The harm of bacterium and exhaust gas.
Preferably, the silver-carrying nano zeolite powder is made by the following method：Appropriate silicon is first added in deionized water
Alkane coupling agent after mixing evenly, is added the nano zeolite powder that partial size is 20~30nm and is uniformly dispersed, add AgNO3 solution, surpass
Mixed liquor is heated at least 18h at a temperature of 150~200 DEG C after sound oscillation, is filtered after being cooled to room temperature, filtrate is spent respectively
Ionized water and ethanol washing are dried afterwards to get silver-carrying nano zeolite powder for several times.In the present invention first by silane coupling agent be dissolved in from
Nano zeolite powder is added in sub- water, so that nano zeolite powder can be evenly dispersed, will not be reunited, while being conducive to improve load
Even property, add AgNO3 solution carry out it is loaded modified, before modified carry out sonic oscillation auxiliary so that nano zeolite powder diameter is equal
Even distribution, modification temperature are controlled at 150~200 DEG C, and the impurity such as organic matter inside nano zeolite powder can be removed at this temperature
It goes, surface area becomes larger, and duct is dredged, and adsorbance is increased, and favorably changes and improves load effect.
Preferably, the mass ratio 3 of the nano zeolite powder and deionized water：(7~8), silver in silver-carrying nano zeolite powder
Load capacity be 3~5wt%.
Preferably, the process conditions of the sonic oscillation are：10~15min of ultrasonic time, 60~70W of ultrasonic power,
50~60 DEG C of ultrasonic temperature.
A kind of bactericidal inner wall coating application method, the specific steps are：It is smoothed out after inner wall surface is cleaned out with putty, to
Putty sprays bactericidal inner wall coating according to construction requirement after being completely dried several times.
It is preferred that construction temperature >=5 DEG C, ambient humidity≤85%.The problems such as temperature will excessively cause film efflorescence to be cracked, ring
Border humidity conference make paint film for a long time do not do, cause to form a film bad, thus limited in the present invention construction technology condition as：Construction temperature
>=5 DEG C of degree, ambient humidity≤85%.
Therefore, the present invention has the advantages that：By the rational proportion of base-material, filler and various auxiliary agents, it is produced into
This is low, and non-toxic and tasteless, safety and environmental protection, wash-resistant property is good, permanent to sterilize, and can be widely used for room, office, classroom, hospital
Equal interior walls coating, reduces the harm of all kinds of bacteriums and exhaust gas.
Specific embodiment
Below by specific embodiment, the present invention will be further described.
Embodiment 1
A kind of bactericidal inner wall coating, is made of the component of following weight proportion：25kg acrylic emulsion, 0.1kgOP-10 cream
Agent, 0.1kg tributyl phosphate, 10kg hydroxyethyl cellulose, 0.3kg sodium polycarboxylate, 0.3kg calgon, 1kg the third two
Alcohol, 3kg diatomite, 1kg sepiolite powder, 10kg silver-carrying nano zeolite powder, 30kg deionized water, wherein silver-carrying nano zeolite powder is logical
Following methods are crossed to be made：Appropriate silane coupling agent is first added in deionized water after mixing evenly, it is receiving for 20nm that partial size, which is added,
Rice zeolite powder is uniformly dispersed, the mass ratio 3 of nano zeolite powder and deionized water：7, AgNO3 solution is added, it will after sonic oscillation
Mixed liquor heats at least 18h at a temperature of 150 DEG C, and ultrasonic time 10min, ultrasonic power 60W, are cooled to by 50 DEG C of ultrasonic temperature
It is filtered after room temperature, the load silver that it is 3wt% to get silver load capacity that filtrate is dried with deionized water and ethanol washing afterwards for several times respectively
Nano zeolite powder.
Embodiment 2
A kind of bactericidal inner wall coating, is made of the component of following weight proportion：30kg acrylic emulsion, 0.3kgOP-10 cream
Agent, 0.3kg tributyl phosphate, 15kg hydroxyethyl cellulose, 0.5kg sodium polycarboxylate, 0.5kg calgon, 3kg the third two
Alcohol, 5kg diatomite, 3kg sepiolite powder, 15kg silver-carrying nano zeolite powder, 35kg deionized water, wherein silver-carrying nano zeolite powder is logical
Following methods are crossed to be made：Appropriate silane coupling agent is first added in deionized water after mixing evenly, it is receiving for 30nm that partial size, which is added,
Rice zeolite powder is uniformly dispersed, the mass ratio 3 of nano zeolite powder and deionized water：8, AgNO3 solution is added, it will after sonic oscillation
Mixed liquor heats at least 18h at a temperature of 200 DEG C, and ultrasonic time 15min, ultrasonic power 70W, are cooled to by 60 DEG C of ultrasonic temperature
It is filtered after room temperature, it is 3~5wt%'s that filtrate uses deionized water and ethanol washing to be dried afterwards for several times to get silver load capacity respectively
Silver-carrying nano zeolite powder.
Embodiment 3
A kind of bactericidal inner wall coating, is made of the component of following weight proportion：28kg acrylic emulsion, 0.2kgOP-10 cream
Agent, 0.2kg tributyl phosphate, 12kg hydroxyethyl cellulose, 0.4kg sodium polycarboxylate, 0.4kg calgon, 2kg the third two
Alcohol, 4kg diatomite, 2kg sepiolite powder, 12kg silver-carrying nano zeolite powder, 32kg deionized water, wherein silver-carrying nano zeolite powder is logical
Following methods are crossed to be made：Appropriate silane coupling agent is first added in deionized water after mixing evenly, it is receiving for 25nm that partial size, which is added,
Rice zeolite powder is uniformly dispersed, the mass ratio 3 of nano zeolite powder and deionized water：7.5, AgNO3 solution is added, after sonic oscillation
Mixed liquor is heated at least 18h, ultrasonic time 12min, ultrasonic power 65W at a temperature of 180 DEG C, it is 55 DEG C of ultrasonic temperature, cooling
It is filtered after to room temperature, it is 3.5wt%'s that filtrate is dried afterwards to get silver load capacity with deionized water and ethanol washing for several times respectively
Silver-carrying nano zeolite powder.
The preparation method of bactericidal inner wall coating of the invention is that after being dispersed with stirring each component uniformly, it is thin to be ground to requirement
Degree, filtering and discharging.
The concrete construction method of bactericidal inner wall coating of the invention is：It is smoothed out after inner wall surface is cleaned out with putty,
Spray bactericidal inner wall coating, construction temperature >=5 DEG C, ambient humidity several times according to construction requirement after putty is completely dried
≤ 85%.
Bactericidal inner wall coating property Testing index of the invention is as shown in table 1：
The bactericidal inner wall coating property Testing index of the invention of table 1
Bactericidal property test is carried out to bactericidal inner wall coating obtained in Examples 1 to 3, bactericidal property test is using antibacterial
Circle method is analyzed, with Escherichia coli (E.coli) for test organisms.The test method of inhibition zone method is：By the meat extract egg after sterilizing
White peptone agar medium pours into sterilizes culture dish, and plate is made after cooling, is uniformly coated with every milliliter containing Escherichia coli
Bacterium solution is coated with uniformly with glass bar, Escherichia coli is inoculated on meat extract peptone agar, by the circular filter paper piece after sterilizing
(diameter 10mm, thick lmm) dipping in the suspension containing coating is placed on the center of agar plate, and one is added dropwise on filter paper
After dripping bacterium solution, culture dish is placed in 37 DEG C of constant incubator and takes out the size of inhibition zone around measurement sample for 24 hours, that is, surveyed
The region loop diameter that amount filter paper and its surrounding bacterial cannot be grown compares the diameter of inhibition zone to determine that its antibacterial is living
Property.Obtained test result is as shown in table 2.
Bactericidal inner wall coating bactericidal property test result in 2 Examples 1 to 3 of table
As known from Table 2, the growth of Escherichia coli is all suppressed, and the diameter of inhibition zone is all larger than 20mm, illustrates the present invention
Bactericidal inner wall coating have preferable fungistatic effect.
Above-mentioned embodiment is only a preferred solution of the present invention, not the present invention is made in any form
Limitation, there are also other variations and modifications on the premise of not exceeding the technical scheme recorded in the claims.
Claims (6)
1. a kind of bactericidal inner wall coating, which is characterized in that be made of the component of following parts by weight：25~30 parts of acrylic emulsions,
0.1~0.3 part of OP-10 emulsifier, 0.1~0.3 part of tributyl phosphate, 10~15 parts of hydroxyethyl celluloses, 0.3~0.5 part poly-
Carboxylic acid sodium, 0.3~0.5 part of calgon, 1~3 part of propylene glycol, 3~5 parts of diatomite, 1~3 part of sepiolite powder, 10~15 parts
Silver-carrying nano zeolite powder, 30~35 parts of deionized waters.
2. a kind of bactericidal inner wall coating according to claim 1, which is characterized in that the silver-carrying nano zeolite powder by with
Lower section method is made：Appropriate silane coupling agent is first added in deionized water after mixing evenly, it is receiving for 20~30nm that partial size, which is added,
Rice zeolite powder is uniformly dispersed, and adds AgNO3 solution, heats mixed liquor at least at a temperature of 150~200 DEG C after sonic oscillation
18h is filtered after being cooled to room temperature, and filtrate uses deionized water and ethanol washing to be dried afterwards for several times to get silver-carrying nano boiling respectively
Mountain flour.
3. a kind of bactericidal inner wall coating according to claim 2, which is characterized in that the nano zeolite powder and deionized water
Mass ratio 3：(7~8), silver-colored load capacity is 3~5wt% in silver-carrying nano zeolite powder.
4. a kind of bactericidal inner wall coating according to claim 2, which is characterized in that the process conditions of the sonic oscillation
For：10~15min of ultrasonic time, 60~70W of ultrasonic power, 50~60 DEG C of ultrasonic temperature.
5. a kind of bactericidal inner wall coating application method as described in claim 1, which is characterized in that the specific steps are：By interior wall
Metope is smoothed out after cleaning out with putty, sprays bactericidal inner wall coating several times i.e. according to construction requirement after putty is completely dried
It can.
6. the bactericidal inner wall coating application method stated according to claim 5, which is characterized in that construction temperature >=5 DEG C, ambient humidity
≤ 85%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810576164.7A CN108822665A (en) | 2018-06-06 | 2018-06-06 | A kind of bactericidal inner wall coating and its construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810576164.7A CN108822665A (en) | 2018-06-06 | 2018-06-06 | A kind of bactericidal inner wall coating and its construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116904043A (en) * | 2022-08-11 | 2023-10-20 | 国鼎(苏州)材料科技有限公司 | Antiviral inorganic paint and preparation method thereof |
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| CN105176206A (en) * | 2015-10-19 | 2015-12-23 | 广西大学 | Moldproof coating |
| CN106397063A (en) * | 2016-12-06 | 2017-02-15 | 定远县佩璋生态园有限公司 | Organic-inorganic compound fertilizer for Kyoho grapes |
| KR20180010802A (en) * | 2016-07-22 | 2018-01-31 | 주식회사 피움이노베이션 | Inorganic coating composition and its preparing method |
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2018
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| CN105176206A (en) * | 2015-10-19 | 2015-12-23 | 广西大学 | Moldproof coating |
| KR20180010802A (en) * | 2016-07-22 | 2018-01-31 | 주식회사 피움이노베이션 | Inorganic coating composition and its preparing method |
| CN106397063A (en) * | 2016-12-06 | 2017-02-15 | 定远县佩璋生态园有限公司 | Organic-inorganic compound fertilizer for Kyoho grapes |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116904043A (en) * | 2022-08-11 | 2023-10-20 | 国鼎(苏州)材料科技有限公司 | Antiviral inorganic paint and preparation method thereof |
| CN116904043B (en) * | 2022-08-11 | 2024-06-18 | 国鼎(苏州)材料科技有限公司 | Antiviral inorganic paint and preparation method thereof |
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Application publication date: 20181116 |
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| WW01 | Invention patent application withdrawn after publication |